Improvement in treadles for sewing-machines



H J CASE TREADLE FOB SEWING MACHINES.

No. 103,562. Patented May 31, 1870.

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Letters Patent No. 103,562, dated May 31, 1870.

IMPROVEMENT IN 'I'READLES FOR SEWING-MACHINES.

The Schedule referred to in these Letters Patent and making part of thesame Be it known that I, HENRY J. Cssn, of the city of Auburn, in thecounty of Cayuga and State of New York, have invented certain new anduseful Improvements in Oscillating or Pendulum Treadles forSewing-Machines; and I do hereby declare that the following is a full,clear, and exact description of the construction and operation of thesame, reference being had to the annexed drawings, in which- Figure 1 isa perspective view, and

Figure 2, a transverse section.

The same letters indicate like parts in both figures.

The invention is an improvement on my previous invention, for whichLetters Patent were granted me April 20, 1869, and numbered 89,026.

The nature of this improvement consists in pivoting or connecting eachpendulum independently of the other, directly to the under side of thetable or standtop by a broad hinge, so as to give the requisite lateralsteadiness, and so curving the pendulum thatthe point of attachment tothe stand may be made directly over the knees of the operator, who cansit close to the machine and operate it without having the pendulumsinterfere with his knees or clothing; and Y It further consists inlinkingeach pendulum near its center to separate cranks on thedriving-shaft, said cranks being arranged on opposite sides of the axis,but sufficiently to one side of a common plane to overcome what istermed their dead-points; and

It also consists in fastening the foot-rests firmly to the forked orstirrup part of the pendulums.

A represents the top of the stand or table for supporting asewing-machine. This top or stand is supported at each end by aframe-work and legs, B G.

The pendulums D are forked at their upper ends, and are hinged to piecesE, which are fastened firmly to the under side of the table, in front ofits center.

This hinged connection may be made in any other way that will give thenecessary breadth and lateral stitfness.

v The lower ends of the pendulums are also forked,

and to each is rigidly fastened a foot-piece, f.

These pendulums are curved, so as to give sufficient room for the kneesand clothing of the. operator whensitting in proper position forconveniently working the machine. I

A shaft, G, mounted in metallic hearings on the legs or frame-work ofthe stand, has two cranks, H I,

formed on it, which are so arranged as to stand nearly on'opposite sidesof shaft Gr, but enough outside of a common plane to prevent a commondead point when in operation.

- The pendulums D are linked to the cranks by connecting-rods J K, sothat the oscillating motion imparted to the pendulum by the feet of theoperator will, through the cranks, impart a rotary motion to shaft G,and the band-whee] L mounted thereon, and, through this band-wheel, thenecessary motion may be'given to the sewing-machine, which may bemounted on the top of the stand.

By curving the pendulums, as shown, the point of attachment for theirupper ends is brought directly over the knees of the operator whensitting in the proper working-position, so that, in working thependulums, very little motion is imparted to the knees, the feet andlegs below the knees having a swinging motion back and forth, on thejoints of the knees as acenter. This motion is found to be much lessfatiguing than the ordinary method of working sewing machines.

Having described my invention,

hat I claim as new, and desire to secure by Letters Patent, is-

1. The pendulum D, forked at its upper end and supported at two points,substantially as set forth.

2. The arrangement of bent pendulums D, links or connecting-rods J K,and crank-shaft G, substantially as set forth.

HENRY J. CASE.

Witnesses:

FRANK It. RATHBUX, Roman 'lnsor.

